L72.12 Trichodermal cyst

Billable ICD-10-CM code, FY2026.

Applicable to

• Trichilemmal (proliferating) cyst

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 704.42 Trichilemmal cyst

Code annotations containing back-references to L72.12

Back-references to L72.12

• Type 2 Excludes: L72.3 Sebaceous cyst ("trichilemmal (proliferating) cyst (L72.12)")

Diagnosis Index entries for L72.12

• Cyst (colloid) (mucous) (simple) (retention) › trichilemmal (proliferating)
• Cyst (colloid) (mucous) (simple) (retention) › trichodermal

Nearby codes

• L72 Follicular cysts of skin and subcutaneous tissue
• L72.0 Epidermal cyst
• L72.1 Pilar and trichodermal cyst
• L72.11 Pilar cyst
• L72.12 Trichodermal cyst (this code)
• L72.2 Steatocystoma multiplex
• L72.3 Sebaceous cyst
• L72.8 Other follicular cysts of the skin and subcutaneous tissue
• L72.9 Follicular cyst of the skin and subcutaneous tissue, unspecified